NumberFormatUtils ios platform variant

src/libs/NumberFormatUtils/index.ios.ts

@@ -0,0 +1,21 @@
+import type {ValueOf} from 'type-fest';
+import intlPolyfill from '@libs/IntlPolyfill';
+import memoize from '@libs/memoize';
+import type CONST from '@src/CONST';
+
+// On iOS, polyfills from `additionalSetup` are applied after memoization, which results in incorrect cache entry of `Intl.NumberFormat` (e.g. lacking `formatToParts` method).
+// To fix this, we need to apply the polyfill manually before memoization.
+// For further information, see: https://github.com/Expensify/App/pull/43868#issuecomment-2217637217
+intlPolyfill();
+
+const MemoizedNumberFormat = memoize(Intl.NumberFormat, {maxSize: 10});
+
+function format(locale: ValueOf<typeof CONST.LOCALES>, number: number, options?: Intl.NumberFormatOptions): string {
+    return new MemoizedNumberFormat(locale, options).format(number);
+}
+
+function formatToParts(locale: ValueOf<typeof CONST.LOCALES>, number: number, options?: Intl.NumberFormatOptions): Intl.NumberFormatPart[] {
+    return new MemoizedNumberFormat(locale, options).formatToParts(number);
+}
+
+export {format, formatToParts};

src/libs/NumberFormatUtils.ts → src/libs/NumberFormatUtils/index.ts

@@ -1,9 +1,6 @@
 import type {ValueOf} from 'type-fest';
+import memoize from '@libs/memoize';
 import type CONST from '@src/CONST';
-import intlPolyfill from './IntlPolyfill';
-import memoize from './memoize';
-
-intlPolyfill();
 
 const MemoizedNumberFormat = memoize(Intl.NumberFormat, {maxSize: 10});